What were two aspects of Wegener's continental drift hypothesis that were objectionable to most Earth scientists?
a. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the gravitational forces of the Sun and Moon and his claim that continents traveled by floating over oceanic crust.
b. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the momentum from the Earth's rotation, and his claim that continents traveled by plowing through oceanic crust.
c. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the gravitational forces of the Sun and Moon and his claim that continents traveled by plowing through oceanic crust.
d. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the result of convection within Earth's mantle, and his claim that continents traveled by plowing through oceanic crust.
e. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the momentum from the Earth's rotation, and his claim that continents traveled by floating over oceanic crust.